From WikiLeaks

The CRS is a Congressional "think tank" with a staff of around 700. Reports are commissioned by members of Congress on topics relevant to current political events. Despite CRS costs to the tax payer of over $100M a year, its electronic archives are, as a matter of policy, not made available to the public.

Individual members of Congress will release specific CRS reports if they believe it to assist them politically, but CRS archives as a whole are firewalled from public access.

This report was obtained by Wikileaks staff from CRS computers accessible only from Congressional offices.

Congress has used the term terrorism often in legislation. Hundreds of federal statutes and regulations already refer to terrorism and related terms in a variety of other contexts. However, these statutes and regulations ultimately refer to an extremely small set of statutory definitions, current criminal law and immigration definitions being among them. This report provides the current text of a few of the fundamental definitions.